The slope-intercept form is written under the form of y=mx+b where m represent the slope and y represent y-intercept. In this case, we know that the m is 8, but we don't have b yet. To find the answer, substitute (0,5) into an equation where y=5 and x=0 y=mx+b y=8x+b 5=8(0)+b 5=b, so we have the complete y-intercept form which is y=8x+b Or You can you this y-y1=m(x-x1) where point (x1,y1) represent point (0,5) in this case which led to: y-y1=m(x-x1) y-5=8(x-0) y-5=8x-8(0) y-5=8x Add 5 to each side y-5+5=8x+5 y=8x+5 represent the slope-intercept form. Hope it help!