Answer:
The rule for a line whose gradient is -4 and y-intercept = 8 is
Step-by-step explanation:
Equation of line slope intercept form is
------------- (1)
Where m is slope or gradient and b is y-intercept
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Substituting values in equation (1)
Answer:
26
Step-by-step explanation:
u dont need it
<span>Input (x) [-2.7] [-1.3] [0.8] [4.4]
Output f(x) [-5.25] [-1.75] [3.5] [12.5]
Input (x) [1.1] [2.4] [5.3] [6.9]
Output f(x) [4.25] [7.5] [11.75] [17.25]
Input (x) [-2.1] [0.9] [1.7] [3.3]
Output f(x) [-3.75] [3.75] [5.75] [9.75]
Just substitute the inputs for x.
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Answer:
6x^2-4a-2x-2
Step-by-step explanation:
Relation between fee charged by piano instructor and the lessons has been shown in the graph.
Two points passing through the line are (2, 80) and (4, 140)
Let the one time fee = $b
Hourly charges for the lessons = $x
Equation of the line will be,
y = mx + b
Slope of the line 'm' =
m =
m =
m = 30
y = 30x + b
For point (2, 80),
80 = 30(2) + b
b = 80 - 60
b = 20
Therefore, one time fee charged by the instructor = $20
Since instructor put a coupon to waive off the one time fee, value of the coupon will be = $20
