The number in the blanks is 3
Start by multiplying the 9 out:
9(-6 + 8y) = -54 + 72y
Then, add the 7:
-54 + 72y + 7
Then simplify the whole thing:
-47 + 72y
Slope is -4 and y intercept is 7. Whatever the number in front of the X is, that will always be your slope. Anything added or subtracted after the x, that’s your y intercept! Hope I helped.
Negative, You'll have to explain the why part though,
A <span>To find the Scale Factor divide= </span><span>a side in the image /<span>the same side in the figure</span></span>