Find the x- and y- intercepts and write as ordered pairs

Question

y=-3x+7

 

y=-3(0)+7

y=0+7

y=7

(0,7) ordered pair for y- intercept

 

y=-3x+7

0=-3x+7

0-7=-3x+7-7

-7/3=-3x/3

-7/3=×

Is this correct?

Answer 1

You are correct on the y intercept.

 

On the x intercept, you are almost correct.  On the next to the last step, where you are dividing both sides by 3, you should be dividing by "-3" instead.  So the x intercept steps would look like this:

 

y=-3x+7
0=-3x+7
0-7=-3x+7-7
-7/-3=-3x/-3
7/3=×

 

So the x intercept is (7/3, 0) . 

Answer 2

Good work. Use caution with your signs for your x-intercept as it should be positive and don't forget to write it as an ordered pair (7/3,0)