Find the x and y intercepts and graph 9x + 8y = 72. Graph the points.
y intercept is when x is zero.
9*0+8y=72 what is y?
x intercept is when y is zero,
9x+8*0=72 what is x?
give the slope of each line then determine whether the two lines are paralell, perpendicular, or neither.
slope of 4x+5y=5, -15x+12y=0
HORIZONTAL LINE X | Y
___|___
-3|2.25
-2|2.25
-1|2.25
0|2.25
To find the x-intercept, we set y = 0 and solve for x.
Substitute y = 0 into the equation 9x + 8(0) = 72, which simplifies to 9x = 72.
Divide both sides of the equation by 9 to isolate x: x = 8.
Therefore, the x-intercept is (8, 0).
To find the y-intercept, we set x = 0 and solve for y.
Substitute x = 0 into the equation 9(0) + 8y = 72, which simplifies to 8y = 72.
Divide both sides of the equation by 8 to isolate y: y = 9.
Therefore, the y-intercept is (0, 9).
Now let's graph the points.
Plot the x-intercept (8, 0) on the x-axis, which means the point is 8 units to the right of the origin.
Plot the y-intercept (0, 9) on the y-axis, which means the point is 9 units above the origin.
Next, draw a straight line through these two points to represent the equation 9x + 8y = 72.
Your graph is now complete.