# math

posted by .

1.describe the line you think each equation represent

Y=x, y=5, x=-3

2. The equation of a line is y=mx+2. determione the value of m when the line passes through each pint

D(12.5) s(1.-3)
e(-2.6) a(-5.1)

• math -

The best way to do question 1 is to draw a graph of each. Draw your x, y axes, then find two points on each of the lines, then use a ruler to draw the line that they're both on.

Which two points? Any two will do, but it's easier to draw if they're not too close together.

Take y=x. Pick a number, any number, say 2. When x=2, what is y? Well y=x and x=2 so y=2, so you have the point (2,2) Another point, say 0. When x is zero, y is zero, so now you have (0,0), the origin. Plot both points, draw a line between, and going off into the distance at both ends. Now describe that line.

Question 2:

y = mx + 2. All we have to do is substitute the point values for x and y, and solve for m. I'll do the first one, (12,5):

y = mx + 2
5 = m*12 + 2
Subtract 2 from both sides:
m*12 = 3
Divide across by 12:
m = 3/12 = 1/4

## Similar Questions

im learnin about y=mx+b 1.describe the line you think each equation represent Y=x, y=5, x=-3 2. The equation of a line is y=mx+2. determione the value of m when the line passes through each point D(12.5) s(1.-3) e(-2.6) a(-5.1)
2. ### Math 101

Find the equation for each of the following items below: a. A line that passes through (6,26) and has a slope of 3. b. A line that passes though the points (5,5) and (10,20) c. A line that passes through (9,25) and has a slope of -3. …
3. ### Math

This question concerns the straight line that passes through the points (−1, 3) and (2, −6). Choose the three true statements from the following. Options A The gradient of the line is 3. B The gradient of the line is −3. …
4. ### Mathamatics

This question concerns the straight line that passes through the points (−1, 3) and (2, −6). Choose the three true statements from the following. Options A) The gradient of the line is 3. B) The gradient of the line is …
5. ### mat 101

Equation for a line that passes through (6,26) and has a slope of 3 Equation for a line that passes through the points (5,5) and (10,20) Equation for a line that passes through (9,25) and has a slope of -3. Equation for a line that …
6. ### Algebra II

Can you make sure my Algebra II work is correct?
7. ### Analytic Geometry

A line Q has an equation of x+5y+5=0. Find the equation of the line that is "perpendicular" to Q an passes through (3,1). Find the equation of the line that is "parallel" to Q and passes to through (3,1). Find the equation of the line …
8. ### Analytic Geometry

A line Q has an equation of x+5x+5=0. Find the equation of the line that is "perpendicular" to Q and passes through (3,1). Find the question of the line that is "parallel" to Q and passes to through (3,1). Find the equation of the …
9. ### Math

What is the y-intercept of y = 2/3x + 2? I have to write it out but how?