Which linear function represents the line given by the point-slope equation y – 8 = y minus 8 equals 1/2 left-parenthesis x minus 4 .(x – 4)?

Given that (x-3) is a factor of f(x)=x^3+ax^2-x-6, find a and hence the number of real roots or the equation f(x)=0

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?