What is y equals -6x plus 9?

Answer 1

Just simply set x equal to 0 in the original equation, and solve for y. Then set y equal to 0 in the original equation and solve for x. When you solve for x, you put that answer for the x coordinate, and a 0 for the y coordinate, and when you solve for y, you put that answer in for the y coordinate, and a 0 for the x coordinate.

Let x=0 in y=-6x+9

y=-6(0)+9

y=0+9

y=9

Now put a 9 for your y coordinate, and a 0 for your x coordinate.

(0,9).

Let y=0.

y=-6x+9

0=-6x+9

Subtract 9 on both sides.

0-9=-6x+9-9

-6x=-9

Divide by -6 on each side.

(-6x)/-6=-9/-6

x=1.5

Now put a 1.5 for your x coordinate, and a 0 for your y coordinate.

(1.5,0).

Your final answers are (0,9) and (1.5,0).