State the property that justifies each statement. (Grade 9 Geometry Proofs) - I could not use symbols, which is why this is so long. PLEASE HELP ME 1.) If angle 1 is congruent to angle 2 and angle 2 is congruent with angle 3, then angle
1 is congruent with angle 3

2.) If angle ABC is congruent to angle DEF, then angle DEF is congruent to ABC

3.) If 2x + y = 5 and x = y, then 2x + x = 5

4.) the measure of angle A = 15, then 3 times the measure of angle A = 45 degrees

Will gve pints stars and brainliest

Factor the expression using gcf 9b+45

Does the function satisfy the hypotheses of the mean value theorem on the given interval? f(x) = 4x^2 + 3x + 4, [−1, 1] no, f is continuous on [−1, 1] but not differentiable on (−1, 1). no, f is not continuous on [−1, 1]. yes, f is continuous on [−1, 1] and differentiable on (−1, 1) since polynomials are continuous and differentiable on . there is not enough information to verify if this function satisfies the mean value theorem. yes, it does not matter if f is continuous or differentiable; every function satisfies the mean value theorem.