Write the following equation in slope intercept form. x = -4 y
A
y = 1/4 x
B
(-4y = x)
D
y = -1/4 x
The correct answer is D. y = -1/4 x.
Which of the following is not a function?
A
y is x.
B
y is 5 more than x.
C
y is either 2 more or less than x.
D
y is always 5 times x.
C is not a function because it does not have a single, unique output for every input. In C, for a given x value there are two possible y values (2 more and 2 less than x). A function must have exactly one output for every input.
y = x
y = x + 3
y = x^2 + 3
y = 3x + 3
y = x^3 - 6
How many of the given equations have a graph of a straight line?
Two of the given equations have a graph of a straight line: y = x and y = 3x + 3.
y = x
y = x + 3
y = x^2 + 3
y = 3x + 3
y = x^3 - 6
How many of the given equations have a graph of a straight line?
A
Four
C
Five
D
Three
The correct answer is A. Four of the given equations have a graph of a straight line.
What is the slope of the line that passes through (5, 8) and (9, 5)?
a. 3/4
b. 2
c. -4/3
d. -3/4
To find the slope of a line passing through two points, we can use the slope formula:
slope = (y2 - y1) / (x2 - x1)
Using the points (5, 8) and (9, 5), we can substitute the values into the formula:
slope = (5 - 8) / (9 - 5)
= -3 / 4
Therefore, the slope of the line is -3/4.
The correct answer is d. -3/4.