F(x) = 3x + 1.....this is the same as y = 3x + 1.
In y = mx + b form, which is what y = 3x + 1 is in, the rate of change (slope) is in the m position and the y int (the initial value) is in the b position.
y = mx + b
y = 3x + 1
ur rate of change (slope)...number in the m position = 3
ur initial value (y int)...number in the b position = 1
so rate of change = 3 and initial value = 1
Answer:
10x-8=b
--------(over)
ax
Step-by-step explanation:
2 (5x-4) = ax +b
distrbute 2
10x-8=ax+b
divide each side by ax
10x-8=b
--------(over)
ax
I think
Answer:
a and -b is the answer
Step-by-step explanation:
(x-a)(x+b) = 0
x-a = 0 and x+b = 0
then
x = a and x = -b
Answer:
y = -3x+2
Step-by-step explanation:
See attachment.
Find the slope:
Rise = (-4 - 5) = -9
Run = (2 - (-1)) = 3
Slope(Rise/Run) = -3
Find the y-intercept:
y = mx + b
y = -3x + b
5 = -3*(-1)+b [Use point (-1,5)
b = 2
====
y = -3x + 2
Answer:
x=30
y=17
Step-by-step explanation:
We know that 6x+9 = 129 since they are vertical angles
6x+9 = 129
Subtract 9 from each side
6x+9 -9 =129-9
6x = 120
Divide by 6
6x/6 =120/6
x = 20
3y+129 =180 since they make a straight line and straight line are equal to 180 degrees
3y+129 =180
Subtract 129 from each side
3y+129-129=180-129
3y = 51
Divide by 3
3y/3 = 51/3
y = 17
