State the slope and y-intercept of the graph of y=-2/5x+2

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

How are sas and sss used to show that two triangles are congruent?