Step-by-step explanation:
<u>The slope-intercept form:</u>
- y = mx + b, where m- slope, b- y-intercept
<u>Given lines:</u>
1)
- y = - 2x + 7
- m = - 2, b = 7
2)
3)
- y = -2.5x + 3.2
- m = - 2.5, b = 3.2
4)
- y = 1/4x - 2/7
- m = 1/4, b = - 2/7
Answer:
a
Step-by-step explanation:
Answer:
Step-by-step explanation:
Tổng : -7,5+(-3,6)+(-4,7)+(-5,3)+(-1,4)=-22,5
Answer:
7 = -x^2 +16
x^2 -16 = 7
x^2 -23 = 0
Using quadratic equation
x = -0 +- sqrt (23^2 - 4*1*23) / 2 * 1
x = sqrt (0 - -92) / 2
x = sqrt (92) / 2
x1 = 4.7958
x2 = -4.7958
(I tried to answer your question - even though you posted no question - AND you posted no graphics)
Step-by-step explanation: