The slope is -10, I used a graph for this.
Answer:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Point Form: (
3
,
14
)
Equation Form: x = 3
,
y = 14
Step-by-step explanation:
(5x+1)² = 7; expand: 25x² + 10x +1 = 7 or 25x² + 10x -6 = 0
Solve this quadratic for x:
x = [-b + √(b² - 4ac)]/2a and x = [-b - √(b² - 4ac)]/2a
Plug the values and you'll find :
x = (- √7 - 1)/5 (answer C)
x = (+√7 -1)/5 (answer E)
