Add y to both sides then do the algebra
The slope, if increased, would make the line y=2x-7 steeper. If you were to increase the y intercept, you would just move the line, not tilt it. Suggest changing it to 4x-7 = y or 8x-7= y, if you increase the slope, it'll make it steeper.
Your denominator is going to be 4 digits. "18,18,18,18".
A. 15
b. 26
d. 41
e. 82
f. 98
h. 49
23/50 is 0.46 so the percentage would be 46%