According to the graph, what is the value of the constant in the equation
Below?

A. 10
B.4
C.100
D.20

Can somebody me out with this question

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol