i need help starting off
Anne and Maureen live in towns that are 57km apart. Anne sets out at 9.00pm one day to ride her bike to Maureen's town at a constant speed of 20km/h. At the same time Maureen sets out to ride Anne's town at a constant speed of 18km/h.
write down a rule for the distance,dkm, that each of them is from Anne's place at a time t minutes after 9.00pm
q2.the straight line with equation ax+by=c passes through the points (2,4) and (-3,1). find the values of a,b,c.
attempt
1-4/-3-2= 3/5
so y=3/5x +c
fiind c, (2,4)
4=(3/5*2) +c
c= (4-6/5)
so equation is y=3/5x + 14/5 ? but answer isnt correct , answer is a=-3 b=5 c=14
thanks
Anne and Maureen live in towns that are 57km apart. Anne sets out at 9.00pm one day to ride her bike to Maureen's town at a constant speed of 20km/h. At the same time Maureen sets out to ride Anne's town at a constant speed of 18km/h.
write down a rule for the distance,dkm, that each of them is from Anne's place at a time t minutes after 9.00pm
q2.the straight line with equation ax+by=c passes through the points (2,4) and (-3,1). find the values of a,b,c.
attempt
1-4/-3-2= 3/5
so y=3/5x +c
fiind c, (2,4)
4=(3/5*2) +c
c= (4-6/5)
so equation is y=3/5x + 14/5 ? but answer isnt correct , answer is a=-3 b=5 c=14
thanks