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Moa (Diskussion | bidrag) | TemplateBot (Diskussion | bidrag) | ||
Rad 26: | Rad 26: | ||
<deduct> | <deduct> | ||
k = \dfrac{y_2 - y_1}{x_2 - x_1} | k = \dfrac{y_2 - y_1}{x_2 - x_1} | ||
− | \ | + | \SubstitutePoints{7,19}{2,\N1} |
k = \dfrac{\col{19} - (\colII{\N1})}{\col{7} - \colII{2}} | k = \dfrac{\col{19} - (\colII{\N1})}{\col{7} - \colII{2}} | ||
− | \ | + | \SubNeg |
k = \dfrac{19 + 1}{7 - 2} | k = \dfrac{19 + 1}{7 - 2} | ||
\FT | \FT | ||
k = \dfrac{20}{5} | k = \dfrac{20}{5} | ||
− | \ | + | \CalcQuot |
k = 4 | k = 4 | ||
</deduct> | </deduct> | ||
Rad 47: | Rad 47: | ||
<deduct> | <deduct> | ||
y = 4x + m | y = 4x + m | ||
− | \ | + | \SubstituteII{x}{7}{y}{19} |
− | \colII{19} = 4 \ | + | \colII{19} = 4 \t \col{7} + m |
− | \ | + | \Multiply |
19 = 28 + m | 19 = 28 + m | ||
− | \ | + | \RearrangeEqn |
28 + m = 19 | 28 + m = 19 | ||
− | \ | + | \SubEqn{28} |
m = \N9 | m = \N9 | ||
</deduct> | </deduct> | ||
Rad 87: | Rad 87: | ||
<deduct> | <deduct> | ||
y-19 = 4(x-7) | y-19 = 4(x-7) | ||
− | \ | + | \Distr{4} |
y - 19 = 4x - 28 | y - 19 = 4x - 28 | ||
− | \ | + | \AddEqn{19} |
y = 4x -9 | y = 4x -9 | ||
</deduct> | </deduct> |
Linjens k-värde kan bestämmas med k-formeln. Man kan exempelvis låta (2,-1) vara punkt 1 och (7,19) vara punkt 2.
Sätt in (7,19) & (2,-1)
a−(-b)=a+b
\FT
Beräkna kvot
x=7, y=19
Multiplicera faktorer
Omarrangera ekvation
VL−28=HL−28