I don't know how to do this

y = 2x + 3

Step-by-step explanation:

The equation of a straight line graph is y=mx+c

m is the gradient of the line. You can work this out like this:

Change in y ÷ change in x

So you have your 2 coordinates, (1,5) and (0,3).

(be careful to choose one coordinate to go first and one to go last)

So to work out m, you would do

5-3 ÷ 1-0 = 2/1 = 2

so that is the first half of the equation, y = 2x

but now you need c, which is the y-intercept. So this is the point on your graph where the point crosses y, so in your question, it would be 3 because it crosses y at 3.

So your answer is y = 2x + 3

answer: ok

step-by-step explanation:

y = 0.77(x)

step-by-step explanation:

the jacket retains this value after 23% cut or retains 77% of original value. plug original 87 jacket price for x and the remaining value should be y.