Evaluating an Expression Evaluate (15 - 4x) + 5 when x = 3.
2 answers:
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Answer:
Step-by-step explanation:
4) (-2,3) ; (-1,-2)
5) line is parallel to x-axis. So, slope= 0
6) (1,1) ; (-2, -1)
Answer:
The standard form of the quadratic equation is x² + 3·x - 4 = 0
Step-by-step explanation:
The standard form of a quadratic equation is a·x² + b·x + c = 0
Given that the expression of the quadratic equation is (x + 4)·(x - 1) = y, we can write the given expression in standard form by expanding, and equating the result to zero as follows;
(x + 4)·(x - 1) = x² - x + 4·x - 4 = x² + 3·x - 4 = 0
The standard form of the quadratic equation is x² + 3·x - 4 = 0
The graph of the equation created with MS Excel is attached
