The roots of the function f(x) = x2 – 2x – 3 are shown. What is the missing number?
2 answers:
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Answer:
Option 2: -¾
Step-by-step explanation:
First identify 2 points on the line.
(0, 1), (4, -2)
Substitute the coordinates into the gradient formula below:
☆ (x₁, y₁) is the 1st coordinate and (x₂, y₂) is the 2nd coordinate.
Slope of the line
☆ Since the line is sloping downwards looking from the left to right, the line must have a negative slope.