Seven times a number is 9 less than the product of the number and -20. What is the number? Please show steps
1 answer:
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Answer:
y = x + 1
Step-by-step explanation:
1) First, find the slope of the line between the two points. Whichever option has the same slope would be the right answer. To find this, use the slope formula .
and
represent the x and y values of one point, and
and
represent the x and y values of another point.
So, use the points given to answer the question. Substitute 4 for , 5 for
, 8 for
, and 9 for
then solve:
Therefore, the slope is 1.
2) Any line that is in a "y = a number" format is a horizontal line, and all horizontal lines have a slope of 0 - so the second option can't be the answer.
The rest of the options are in slope-intercept form, or y = mx + b format. Remember that the coefficient of the term with the x is the slope. Knowing this, y = x + 1 would need to be the answer since the coefficient of the term with the x is 1, and we already calculated that the slope is 1.
<em>When evaluating then we get that the expression is 11</em>
As I understand the expression is the following:
Let's call, that expression as
So we are asked to find the value of the expression when . In other words, we need to substitute
, so:
So <em>when evaluating then we get that the expression is 11</em>
Distributive property: brainly.com/question/10794694
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