I need an answer as fast as possible I’ll give you brainlist and I know I’m stupid!

What is x and y intercepts for y=x+7

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.