contestada

1.For f(x)= 5x+1 : Find(-4).
a.-19 b.1 c.-21 d. 21

2. Write in Standard form an equation of the line passing through the given point with the given slope.
slope=-8 ; (-2,-2)
a.8x+y=-18 b.-8x+y=-18 c. 8x-y=-18 d.8x+y=18

Respuesta :

syed514
1)
f(x)= 5x+1f(-4) = 5(-4) + 1

so

f(-4) = -19 is correct

2)

y = mx+b
-2 = -8(-2)+b
-2 = 16+b
-2-16 = b
-18 = b
b = -18
-------------
y = mx+b
y = -8x-18
8x+y = -18

Answer is choice A
nobillionaireNobley
1.) f(x) = 5x + 1
f(-4) = 5(-4) + 1 = -20 + 1 = -19

2.) Equation of a line passing through point (x1, y1) with slope m is given by y - y1 = m(x - x1)
y - (-2) = -8(x - (-2))
y + 2 = -8(x + 2) = -8x - 16
8x + y = -16 - 2 = -18
8x + y = -18