How can you find the slope and y intercept on a line graph
1 answer:
To graph a linear equation in slope-intercept form, we can use the information given by that form. For example, y=2x+3 tells us that the slope of the line is 2 and the y-intercept is at (0,3). This gives us one point the line goes through, and the direction we should continue from that point to draw the entire line.
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Answer:
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Explanation:
r = number of red pens
4r = cost of buying r red pens
example: if r = 10, then 4r = 4*10 = 40 is the total cost of buying 10 red pens
If John buys r red pens, then he must buy 20-r black pens so that r and 20-r add to 20.
John buys 20-r black pens, and at $5 each, so it will cost 5(20-r) dollars for just the black pens alone.
In total, John spends 4r + 5(20-r) dollars for all the pens (red & black)
We want $92 be the most he spends. This is the ceiling or highest value possible.
Therefore,
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Extra info:
If you want to solve for r, then
distribute
add r to both sides
subtract 92 from both sides
So John must buy at least 8 red pens. The most he can buy is 20 red pens since he wants 20 pens total.
I feel like some information is missing here.
4 out of 5 games is 80%:
So if we know, as a rule that "<span>Joel scores in 80% of his games.", the probability that he will score in 80% of his games is 1 - that is, we know it for sure</span>
4 out of 5 games is 80%:
So if we know, as a rule that "<span>Joel scores in 80% of his games.", the probability that he will score in 80% of his games is 1 - that is, we know it for sure</span>