HELP FAST FOR BRAINLIEST AND 5 STAR 15 POINTS!!

Line cd passes through points c(1, 3) and d(4, –3). if the equation of the line is written in slope-intercept form, y = mx + b, what is the value of b? –5 –2 1 5

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)

Kevin's bank offered him a 4.5% interest rate for his mortgage. if he purchases 3 points, what will be his new rate?