Answer:
Step-by-step explanation:
<u>Use two pairs of points to work out the equation: </u>
<u>Find the slope:</u>
- m = (5 - 1) / (2 - 1) = 4/1 = 4
<u>Find the y-intercept:</u>
- 1 = 4*1 + b
- b = 1 - 4
- b = - 3
<u>The line is:</u>
Correct choice is D
Answer:
Step-by-step explanation:
<u>According to intersecting chords theorem:</u>
- 21(2x - 6) = 30(x + 1)
- 42x - 126 = 30x + 30
- 42x - 30x = 126 + 30
- 12x = 156
- x = 156/12
- x = 13
<u>Find the value of YZ:</u>
